How to control FontSize and MarkerSize of Legend at the same time?

I can control fontsize and markersize in legend separately but not together.

For example, to control fontsize I use:

lgd =legend('A,'B',C');

lgd.FontSize=13;

And to control markersize I use:

[lgd,icons] =legend('A,'B',C');

icons2 = findobj(lgd,'Type','line');

icons3 = findobj(icons2,'Marker','none','-xor');

set(icons3,'MarkerSize',10);

Can anyone help me with this problem? I am driving myself nuts. Thanks alot!