The McCarville's appear to have originally settled in Willow Springs Township mid-way between Darlington and Mineral Point. There is a Catholic cemetery at Willow Springs called Holy Assumption. The church is no longer there. The cemetery is no longer used and is in deteriorating condition, but many monuments are still in pretty good shape. I visited it last summer and took digital photos of the remaining stones. Some are very hard to read, but from what I can decipher (with some help from a cemetery directory done in 1979), here is a list of those buried there:
Dennisd. Oct 15, 1888age 99 yearsnative of the parish of Drummond, County Monaghan, Ireland(photo)
Mary wife of Dennisb. May 20, 1797 at Monaghan Irelandd. Apr 21 1867(photo)
Johnd. Mar 18, 1897age 71 born in the town of Garahan, County Monaghan Ireland (photo)
??aged 35native of Bannen, Galaway County, Ireland
Patrick s/o J&Rd. Feb 1865age 7 years, 6 weeks (photo)
Johnnie d. Jan 1864age 2 years, 6 months Maggie d. Jan 1864 age 2 years, 6 months Children of J&R (On same stone)(photo)
Thomasd. Nov 11, 1871age 49 Native of County Monaghan, Ireland (photo)
Eliza d/oC&M Jan 20, 1872 - Oct 12 1879(photo)
Thomas Franciss/o J.A.&C.A. d Feb22,1889age 6 months, 10 days
The ones marked (photo) are ones that I photographed last summer. If these names connect with yours I can sewnd the photos to you. From this list one might assume that Dennis is the patriarch of the family line.
There are also quite a few McCarvilles buried at Holy Rosary at Darlington. Many of these probably joined Holy Rosary when Holy Assumption closed it's doors. St. Philomena Catholic Church in Belmont still holds the records to Holy Assumption.