https://en.wikipedia.org/wiki/Order_of_Saint_Lazarus

Affiliations:
-House of Savoy
-House of Bourbon

https://en.wikipedia.org/wiki/Royal_Military_and_Hospitaller_Order_of_Our_Lady_of_Mount_Carmel_and_Saint_Lazarus_of_Jerusalem_united

"Order of Saint Lazarus, founded in 1098 at a leper hospital in the Latin Kingdom of Jerusalem and is one of the lesser known orders."

https://en.wikipedia.org/wiki/Order_of_the_Iron_Helmet
"On 18 March 1814 Elector Wilhelm I of Hesse-Kassel (or Hesse-Cassel) founded the Order of the Iron Helmet (German: Orden vom Eisernen Helm).

Maximilian Gritzner describes the model and the statutes of the order as "influenced by the example of the Iron Cross"."

https://en.wikipedia.org/wiki/House_of_Hesse