I'm not related but:
Obit - Mary Ann McCullough nee Priestly -The Yackandandah Times 5/1/1900
http://archiver.rootsweb.ancestry.com/th/read/AUS-VIC-HIGH-COUNTRY/2004-11/1100740050"The deceased, who was only 44 years of age leaves a young family of nine children. Her brothers are Messrs Alex, James, John, William and George Priestley and her sister is Mrs McCormick."
Obit of John McCullough 1928
http://trove.nla.gov.au/newspaper/article/144925972?searchTerm=mccullough%20down&searchLimits=MARRIAGE.
PREISTLEY— BURGIS— On the 23rd in
stant, at the residence of the Bride's
Parents, by the Rev. J. H. Meek, B.A.,
Alexander Priestley, third son of Alex
ander Priestly, to Maud Elinor Burgis
(both of Yackandandah).
http://trove.nla.gov.au/newspaper/article/144802077?searchTerm=%22Alexander%20Priestley%22%20Yackandandah&searchLimits=Eleanor Maude Priestlys death
PRIESTLEY.— On July 14, at 12 Heaton-
avenue, Elwood, Elenor Maud, wife of Alex
ander Priestley, late of Yackandandah. 1939
http://trove.nla.gov.au/newspaper/article/204936327?searchTerm=%22Alexander%20Priestley%22%20Yackandandah&searchLimits=Priestley— Walker.
Another interesting wedding took place
on Wednesday, August 23rd, on the
Beechworth road, the contracting parties
being Mr. George Priestley, fourth son
of the late Mr. Alex. Priestley, to Miss
Georgina Walker, eldest daughter of .the
late Mr. George Walker, of Yackandan
dah. The Rev. J. Howard Meek offici
ated. The bride, who was attired in a
tasteful costume of silver grey poplin,
trimmed with satin, gathered ribbbon to
match, and steel " buckle, was given away
by Mr. George M'Cormick, sen., and was
attended by Miss. Maggie M'Cullough as
bridesmaid. The latter lady wore a pretty
dress of cream cashmere,- trimmed with
cream silk_and lace. Mr. Jas. Priestley,
brother of the bridegroom, did the honors
of best man. The ceremony over, a large
company sat down to a sumptuous wed
ding breakfast, when the usual toasts
were proposed and honored with much
heartiness. In the evening a dancing
party was organised, and the festivities
continued- until early morning
http://trove.nla.gov.au/newspaper/article/199465931?searchTerm=mcormick%20priestley&searchLimits=WW1
Adelaide Jane Priestley
Service Number: Staff Nurse
Place of Birth: Yackandandah, VIC, Australia
Place of Enlistment: 3md N/A
Next of Kin: Priestley, Alex (father)
http://honouringanzacs.net.au/view-anzac-searched.php?aid=279773&anzactype=1&search_text=Yackandandah,%20VIC,%20AustraliaShe married a Francis McPhee
http://trove.nla.gov.au/newspaper/article/144780640?searchTerm=%22Adelaide%20Priestley%22&searchLimits=Arthur Welshman McCullough
Service Number: 5383
Place of Birth: Yackandandah, VIC, Australia
Place of Enlistment: Melbourne, VIC, Australia
Next of Kin: McCullough, James (father)
http://honouringanzacs.net.au/view-anzac-searched.php?aid=279744&anzactype=1&search_text=Yackandandah,%20VIC,%20AustraliaWW2
MCCULLOUGH NEVILLE GRAHAM : Service Number - QX63536 : Date of birth - 31 May 1921 : Place of birth - YACKANDANDAH VIC : Place of enlistment - Unknown : Next of Kin - MCCULLOUGH JAMES
MCCULLOUGH GAVIN : Service Number - VX109924 : Date of birth - 25 Jun 1921 : Place of birth - YACKANDANDAH VIC : Place of enlistment - IN THE FIELD QLD : Next of Kin - MCCULLOUGH W