The Linwood Plantation in Ascension Parish where Maurice Albert Neames was born.

From ‘Along the River Road’ by Mary Ann Sternberg

53.0 miles from the Jefferson / St Charles Parish line the BASF Corporation is located on three plantation properties, the farthest-downriver of which was Linwood. A grove of large live oaks marks the probable site of the Linwood Plantation house. It was part of the holdings of Duncan Kenner's father, William, after whose death it became the property of Duncan's younger brother, George. The house, a contemporary of Ashland, was set back from the road about half a mile. It was imposing, designed by James Gallier to resemble an Italian villa, with frescoed walls and ceilings reproducing those of the Brenta Villas in Italy and a porte cochère with vaulted ceiling.
Author Eliza Ripley, describing a trip to Linwood in 1849, was duly impressed: "The culmination of landscape wall paper must have been reached in the Minor plantation dwelling. . . . The hall was broad and long, adorned with real jungle scenes from India. A great tiger jumped out of dense thickets . . . tall trees reached to the ceiling with gaudy striped boa constrictors wound around their trunks; hissing snakes peered out of the jungles; birds of gay plumage . . . almost out of sight in the greenery; monkeys swung from limb to limb. To cap the climax, right close to the steps one had to mount to the story above was a lair of ferocious lions.”

During the Civil War, the house was raided by Union soldiers.

The property remained in the family for seventy-five years. It was abandoned in 1900. The mansion was considered beyond restoration and demolished in 1939 by new owners who turned the property into a stock farm.

 

Linwood, derelict, in a WPA photograph taken shortly before the house's demolition in 1939 (click on photo for a larger image).
Courtesy State Library of Louisiana
 
Click here for a map of the river road between New Orleans and Baton Rouge. I believe Linwood was located between Darrow and  Geismar. See 1862 map below.

 
Where was Littledale, Daniel G. Neames' property?

According to the following information provided by Kaye and taken from Ascension Parish Courthouse Conveyance Records we have this description:

A certain tract of land in the Parish of Ascension on the left bank of the Mississippi River at
about five miles above the town of Donaldsonville measuring half an arpent front in said river
by about thirty arpents in depth (more or less) bounded above by lands of Mrs. Isidore Landry
and below by lands of Daniel G. Neams together with all the buildings thereon and thereunto
belonging - being the same property acquired by the present vendor from John Warner by act
passed before Charles Gecks Recorder on the 26th of March 1878 and recorded in the Book
of Conveyance No. 30 page 317. 

One interesting thing about the way land was measured - they used the arpent. According to Wikipedia: There were various standard arpents. The most common ones were of 180 French feet, used in French North America, and 220 French feet, used in Paris. 1 arpent = 180 French feet (of approximately 32 centimetres) = about 192 English feet = about 58.47 metres Daniel G. Neames' Littledale was 1/2 arpent by 30 arpents. This is 96 ft by 5760 ft which is 552,960 sq ft or 12.69 acres.

According to Ascension Parish Courthouse employees, this would suggest that Littledale would be somewhere along the east bank of the river. And due to MA Neames' being born at Linwood Plantation, Littledale may have been near there. Here is a detailed map from 1862 showing many of the property names.

Check out this Google Maps Sattelite photo of the same area.