Okay, I have this. I do not have my maternal 1/2 first cousin’s full tree to view yet. To restate our shared line is through our maternal grandmother. My half first cousin Armstrong recently had DNA done. In the meantime, I have been identifying my segments as I can. I have been concentrating heavily on a specific family in my paternal Brady line. I was curious about some surnames from my grandmother’s line that were showing up (Green and Justice). I decided it would be a good idea to enter all my half first cousin’s DNA so I could better define my grandmother’s line. Surprise! I ran into a surname from my maternal grandfather’s line (Hohimer) to add to the mix. On Chr 12 I was excited because it is one chromosome where I have made loads of connections on the Brady family in my paternal 5th great grandfather on my father’s maternal line. I thought entering my Armstrong cousin’s areas where we match would help me define recombination areas. My half cousin, not yet on Gedmatch, I transferred the results from FTDNA. We share a whopping 95 cM on chromosome 12 and it is smack dab in the middle of the family matches in my paternal Brady line. I have found two surnames (Justice and Greene) I have walked back in my maternal grandmother’s line which I suspect are part of the reason we share such a large segment on this chromosome and have done my best to expand my tree to answer to address this. I believe your suggestion of TG’s is the answer. With the information on his grandfather’s line I actually believe I can do this; even though some of the segments in the TG’s might be quite small. What a wonderful puzzle. It like a beautiful assortment of silver and gold chains tangled in the bottom of a jewelry box. Patience, persistence with TG’s acting as the oil to help them easily slide apart. Thanks for the advice! Endogamy though a bit of a headache at times, can be fun! Still having a blast.