McEntee burials

Seeking help to locate my gg-grandparents Edward Salisbury McEntee (1842-1880) and Jane "Jennie" (Donaldson) McEntee (1850-1883).

Edward is indicated as the purchaser of Block 4, Lot 34 in Hough Cemetery, Almont.His and Jennie's infant son, Geordie, died in 1873, was buried there and has a headstone.Edward died at the age of 38 on 11/27/1880 in Port Colborne, Ontario, Canada and it has been advised that his body was "returned to Michigan".Jennie passed away when not yet 33 years old on 1/18/1883 in the town of Lapeer.(see my memorials on findagrave.com for some photos and further information)

Could they both be buried in unmarked graves next to Geordie in Hough Cemetery?Could Edward be in Goodrich Cemetery (Kidder Road,Bruce Twp., Macomb County) with some of his brothers?Could Jennie be buried in an unmarked location in Mount Hope Cemetery in Lapeer with her Donaldson parents and siblings?

I don't know where to turn for confirmation of these ancestors' final resting places.Any advice or assistance would be greatly appreciated!Thanks!!