Joseph Gray was the son of Thomas Gray and Elizabeth Taylor (she was married 1st to William Hueston).
"William Hueston, the father of Colonel Hueston, married Elizabeth Taylor, a sister of the late Henry Taylor, who lived near Four-mile creek, in Butler county. They had children:

I. Matthew, the subject of this sketch.
II. Mary, who married Gilbert Marshall, and lived near Darrtown, in Butler county, where he died. His widow and several of their descendants are yet living in the neighborhood.
III. Thomas Hueston lives on a fine farm on the Hamilton and Eaton turnpike road, four miles from Hamilton.
IV. Robert Hueston, another son, went to New Orleans many years ago, and died there of yellow fever.
V. John Hueston went to the South, and settled near Natchez. He died some years ago.
VI. Jane, a daughter, married a Mr. Semple.

After the death of William Hueston, his widow married Thomas Gray. They came to the West, and lived near Four-mile creek, in Butler county, where they died several years ago. The fruits of that marriage were:

I and II. Samuel and William Gray were twins. Samuel was a carpenter, learned his trade in Hamilton, and lived several years in Rossville, then removed West, and finally went to Oregon, where he died. William is yet living near Crawfordsville, State of Indiana.

III. Robert Gray, a son, died at Brookville, Indiana, some years ago.

IV. Elizabeth Gray married John Nelson, the son of an old and respectable settler of Butler county. He was a wheelwright by trade, and lived some time in Rossville. They removed West, and both died in the State of Illinois.

V. Joseph Gray died at Crawfordsville, in the State of Indiana, in the year 1855.

VI. Sarah Gray married Dr. Robert Millikin, who was for many years a practicing physician in Rossville. She died in August, 1833.

[Source: Pioneer Biography : Sketches of the Lives of some of the Early Settlers of Butler County, OH, V.2, pg 211-212. McBride, James. 1871. online @Butler County, OH genweb site]

Joseph's wife, Elizabeth Richey was the daughter of Robert and Martha Richey of Butler County, OH. [Source: Robert Richey will, copy in my possession and in the Butler County Courthouse] I'd love to share info. mjoth2@juno.com