3. Learning Mishnayos according to the name of the deceased:[1]

It is a widespread custom to study chapters of Mishnayos in accordance to the name of the deceased. One studies one chapter of Mishnayos per letter, choosing those chapters that begin with the letters of the name. For example, if the name is אברהם then one begins with a chapter that begins with an א  and then continues with a chapter that begins with a ב  and so on and so forth. In the event that there are two of the same letters in the name, one is nevertheless to study a full chapter for each letter. However, it is not necessary to study different chapters for each repeated letter, and one may repeat the study of the same chapter.[2]

The name of the parent:[3] When learning Mishnayos in accordance to the letters of the name of the deceased, one studies only in correspondence the name of the deceased and not the name of his parent.

_____________________________

[1] See Nitei Gavriel 64

[2] Igros Kodesh 17:271, printed in Shulchan Menachem 5:313

[3] Mishmeres Shalom Lamed 24; Igros Kodesh 17:271, printed in Shulchan Menachem 5:313; Nitei Gavriel 64:4

Other customs: Some are accustomed to also recite the chapters that correspond to the parent’s name. [Nitei Gavriel ibid]