Queen Mathilde's maternal uncle, Count Michal Komorowski (b.1953) & his wife Dominique, nee Willems (b.1956) became double grandparents last year!
Their firstborn son, Count Léon Godefroy Komorowski (b.1978) & his wife Kim-Hee, nee Boreux had their third child.
A sibling for Edouard-Michel (b.2008) & Oscar (DOB unknown)
Their younger son, Count Rodolphe Komorowski (b.1980) & his wife Patricia Carolina, nee Blanco (b.1982) had their second child.
A sibling for Charles (b.2016)
Their daughters Charlotte (b.1982) & Marie (b.1989) are reportedly single.
Source: Descendants of Prince Ladislaw Sapieha-Kodenski
Comte Léon Komorowski and his wife Kim-He Boreux's third child is a daughter Alix.
A sister for Edouard-Michel and Oscar
Source: same as above.