thanks for your query.
I think he needs consultation with doctor, because nose bleed needs evaluation.
It could be due to any systemic illness like Hypertension
or any local cause, also the headache and old age favors hypertension most likely.
If so he needs any antihypertensive drug, that will solve all the problem.
For nose bleed to stop, just pinch the nose tightly for 3-4 min, apply ice cold
water to nasal area.
Use normal saline nasal spray
like nazone spray.
Many thanks, take care.