I read her mom is an only child, and her grandmother, who she was close with, is deceased.
Meghan's mother Doria (similar to Meghan) has an older half brother and sister. Doria's mother Jeanette Johnson Ragland was born in Cleveland, Ohio (Jeanette's mother Netty Arnold worked as a maid at the former St. Regis Hotel on Euclid Avenue). Netty had married a bell hop whom she met on the job. He later left her after she gave birth to Jeanette. Similarly, Jeanette married a professional roller skater named Joseph Johnson, who ended up leaving her after she gave birth to two children, Joseph Jr., and Saundra. Jeanette later met and married Alvin Ragland a Baptist minister and an antiques dealer whose family hailed from Missouri. Jeanette gave birth to Doria Ragland in Cleveland, Ohio. While Doria was still a baby, the family decided to move to southern California. Joseph, Jr was 8-years-old at the time. He has recounted to the
Daily Mail the prejudice his family encountered in a small Texas town, during their travel across the country.
Meghan has also written and spoken about her family's migration from Cleveland and the prejudice they faced (as told to her by her grandfather Alvin Ragland, who is deceased). Meghan's maternal grandmother, Jeanette, is also deceased, as is her paternal grandmother (with whom she was also close). Meghan has written beautifully about being nurtured by her mother Doria, and her grandmother Jeanette. Meghan's uncle, Joseph Jr, is apparently estranged from Doria, or else they drifted apart somehow. After Meghan's engagement to Prince Harry, Joseph Jr chose that moment to finally give in to the badgering by the
Daily Mail for information and pictures (six figures has been bandied about as the pay-off).
Here's a video that's been around for awhile (taken from the DM article) showing some of the family photos sold by Meghan's Uncle Joseph:
https://www.youtube.com/watch?v=A6Wrgig521Y note the family photo at 0:44 showing 4-yr-old Meghan being held by her grandfather Alvin Ragland, while Tom Markle Jr for some mischievous reason is holding up Meghan's ponytail. Clearly, Meghan grew up surrounded by her aunt, uncle, grandmother and cousins on her mother's side. And there are also plenty of pictures available on the Internet of Meghan with her Dad and her Dad's side of the family. But apparently there were family tensions on both sides, and family members drifted apart or became estranged. We've never heard anything from Doria's half-sister Saundra, aside from Saundra's reported confirmation that she was not invited to the royal wedding, and that she declines to comment further.